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(No Model.)

J. H. DOLL.

SLEEVE 0E GOLLAR BUTTON.

No. 319,467. Patented June 9,1885.

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JOSEPH H. DOLL, OF NEWARK, NEW' JERSEY.

SLEEVE OR COLLAR BUTTON.

SPECIFICATION forming part of Letters Patent No. 319,4:6'7, datedJune'9, 1885.

Application filed January 23, 1885. (No model.)

To wZZ whom it may concern.-

Be it known that I, J osnrn H. DOLL, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented a new and useful Improvement in Sleeve and Collar Buttons, ofwhichthe following is a specification.

My invention relates to that class of sleevebuttons in which the smallerdisk is hinged so that it may be turned nearly or entirely in linewiththe shank to allow it to be passed freely through the button-holes;and the object of my invention is to provide a ready and effectivelocking means, which will hold the two disks of the button firmlyparallel to each other until it is desired to unlock them. I attain thisobject by the mechanism illustrated in the accompanying drawings, inwhich- Figure 1 is a side elevation, partly in section, showing thebutton unlocked. Fig. 2 is a central section showing the parts locked,and Fig. 3 is aperspective view seen from below.

All the figures are represented on an enlarged scale.

Similar letters refer to si milar parts throughout the several views.

A is the large disk or button proper; B, the small or tilting disk. 0 isthe outside shell of the shank, and O that part of the shank whichslides inside the shell 0. To this piece 0 the disk B is hinged by thepin b. O is partly hollow, to receive a coiled spring, d, which tends topress this piece out of the tube 0 to allow the disk B to tilt.

To prevent G from disengaging entirely from the tube 0 by the force ofspring (I, a small round-headed screw, 0, is screwed into the piece 0,which slides in a longitudinal slot, 0, of the tube 0. The slot 0 islong enough to allow the hinged part to project out of the tube 0 justso far as to allow the disk B to turn in line with the tube 0, or nearlyso.

At the lower end of the slot 0 is a short circumferential slot, 0*,slightly inclined-a part of a screw-helix-or, in other words, the twoslots form an obtuse angle with each other. This angle, however, must bebut little above ninety degrees to insure a firm interlocking of theparts under all conditions.

After the button, as represented in Fig. 1, has been passed through thebutton-holes, B is turned, pressed down toward A, and at the same timealittle revolved. By this part revolution the screw 0 engages with theslot 0 and, owing to its slight incline, draws the disk B firmly againstthe end of the tube 0, making the whole virtually like one solid piece.A reverse motion of the diskB brings the screw 0 into the longitudinalslot c,when the spring (Z begins at once to exert its power and push thepiece 0 out of the tulocGto its full extent, carrying with it the diskB, which latter drops immediately by its own gravity to the lower sideof the shank.

To insure very firm interlocking, I prefer to make the screw 0 with anenlarged head, and reduce the thickness of the tube-metal adjoining thelongitudinal slot, so that the screw will move freely in the latter, butthe head will rub hard against the outside of the tube in the inclinedslot 0 producing an additional friction, and consequently creating astronger hold with less or no chance for an ac cidental unlocking. Ibelieve, however, that it will suffice to have the screw flush with theoutside of the tube O, which would make this arrangement morepreferable, as the projecting head might tend to wear out thebuttonholes too soon.

I am aware that prior to my invention sleevebuttons have been made withhinged disks. I therefore do not claim the hinged part, broadly; but

What I do claim, and desire to secure by Letters Patent, is

1. The hinged disk B and sliding piece G, in combination with the coiledspring (1, screw 0', and longitudinal and inclined locking-slot c a,substantially as and for the purpose herein set forth- 2. In asleeve-button, the piece 0, sliding inside the fixed slotted tube 0,actuated by the spring d, and held in place by the stop 0, substantiallyas described.

JOSEPH 1H. DOLL.

Witnesses:

PHILIP BRILL, A. HORMANN.

